Eight-pass neodymium-doped yttrium aluminum garnet laser amplifier at the 5 J level
Abstract This paper presents an innovative eight-pass laser amplifier design that effectively utilizes polarization and angular multiplexing, enjoying high gain, high extraction efficiency and compact layout. To optimize the design parameters, a general spatiotemporal model for a multi-pass amplifier is established that accounts for beam passages in different angles, and the predicted output energy and gain distribution agree well with the experimental results. The multi-pass amplifier scales the seed energy of 120 mJ to 5 J at 10 Hz and 3 J at 50 Hz, with the beam quality within three times the diffraction limit.
Authors
- Dai Zhou (ORCID: https://orcid.org/0000-0002-3099-497X)
- shannan Wang
- Xinxing Lei
- Xing Fu (ORCID: https://orcid.org/0000-0003-1758-1561)
- Yuhang Li (ORCID: https://orcid.org/0000-0002-2250-8644)
- Qiang Liu (ORCID: https://orcid.org/0009-0009-9633-1093)
- Yumei Zhang (ORCID: https://orcid.org/0000-0002-1985-2532)
- Xiaokai Huang
Institutions
- Tsinghua University (CN)
Publication Details
- Journal
- High Power Laser Science and Engineering
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1017/hpl.2025.32
- Primary Topic
- Solid State Laser Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Tsinghua University
- National Key Research and Development Program of China